Valve.



E. E. ROSE.-

VALVE.

APPLICATION FILED JULY 12 19:5. RENEWED DEC. 27. l9l6.

1,215,580. Patented Feb. 13,1917.

Fig.

l I /z l 1/ I 24 J 22% g-"r- 1 I l 23 g a u 25 F/gZ. I 7

,45 Fig.3. WITNESSES: 4 INVENTOR EdwardE/Pos.

AToR NEY through a transparent cover 20 that is clamped in place by asuitable ring 21. The member 7 may be turned upon the seat 6 by anysuitable means, such, for example, as a wrench 22 so shaped as to spanthe member 11 and engage openings 23 on opposite sides thereof.

Having thus described the structure of my valve, the operation is asfollows: When pumping, the member 7 is so turned that the port 10 is insubstantial alinement with the portsla and 13, and free communication isestablished from the interior of the container to a pump or otherexhaust means connected to the tube 12. When it is desired to disconnectthe pump, the member 7 is turned so, that the port 10 alineswith *theauxiliary port 16. The existence of atmose pheric pressure upon thesurface of the liquid in the reservoir 15 and of a reasonably highdegree of vacuum within the tube 12 forces the sealing liquid up throughthe passage 17 and the port 16 to. fill the lower portion of the port10. The member 17 is then turned farther until the port 10' iscompletely closed by the seat 6, and the contact bet-ween the members 7and 5 is so intimate that the escape of the sealing fluid is precluded.The tube 12 may then be removed, and a suitable dust cap, indicated by adotted line 24, may be applied for the protection of the valve. Theingress of air to the container at the outer edge of the seat 6 isprevented by a suitable sealing fluid 25 within the casing 9 and isprevented through the port 10 by a sealing fluid which has just beenintroduced.

When it is desired to reopen the valve, atmospheric pressure isintroduced through the member 11, and the port 10 is moved into registrywith the auxiliary port 16, whereupon the sealing fluid within the port10 returns to the reservoir 15 under the influence of gravity, leavingthe port 10 free to be brought into registry with the port 13.

The member 7 may be seated directly upon the base member 4 if desired,but I find that a more satisfactory rubbing contact may be maintainedunder high vacuum between dissimiliar material, such, for example, asmetal and porcelain, rather than between two metallic members.

Vhile I have shown my invention in its simplest and preferred form, itwill be obvious to those skilled in the art that it is susceptible ofvarious minor changes and modifications without departing from thespirit-thereof and I desire, therefore, that no restrictions shall beplaced thereupon except suchas are imposed by the prior art or arespecifically set forth in the appended claims.

I claim as my invention:

1. The combination with a valve including fixed and movable members,each of which is provided with a port therethrough, of a reservoircontaining sealing fluid and communicating with an auxiliary port in oneof said members, and means whereby said movable member may be so turnedthat said auxiliary port will be brought into alinement with one of saidmain ports and said sealing fluid caused to flow into and seal said mainport under the influence of the pressure of the medium within said mainport.

2. The combination with a valve including fixed and movable members,each of which is provided with a port therethrough, of a reservoircontaining sealing fluid'and communicating with an auxiliary port insaid fixed member, and means whereby said movable member may be soturned that said auxiliary port will be brought into alinement with themain port therein and said main port will be sealed by fluid from saidreservoir under the influence of the pressure of the medium within saidport.

3. The combination with a valve including fixed and movable members,each, of which is provided with a port therethrough, of a reservoircontaining a sealing fluid subject to substantially constant pressure onthe surface thereof, an auxiliary port in said fixed, member, and meanswhereby said movable member may be so. turned that the main port thereinwill aline with said auxiliary port and said fluid be drawn up to sealsaid main port when the pressure therein is less. than that on thesurface of the fluid in said; reservoir.

4. A combined closing and sealing valve for a vacuum line comprisingfixed and movable members, each of which is provided with a main porttherethrough, said main ports being in alinement in the open posie tionof the valve, a reservoir containing a sealing fluid and subject toatmospheric pressure, an auxiliary port in said fixed member inconnection with said fluid, and means whereby said movable member may beturned to bring the port therein into alinement with said auxiliary portin order to draw sealing fluid. up thereinto and whereby said movablemember may be furthe-r turned so that the porttherein is closed andsealed.

5. The combination with a vacuum line, of means for mechanically closingsaid line and for sucking sealing fluid over said mechanica-l closure.

of means for mechanically closing said line and for sucking sealingfluid over said mechanical closure, and means for raising the pressurein the portion of said line eXposed to the surface-of the sealing fluidto allow the escape thereof.

8. The combination with a vacuum line, of means for mechanically closingsaid line, for then admitting a sealing fluid over said mechanicalclosure and for then closing the path of entrance of said sealing fluid,and means for raising the pressure within the portion of said lineexpcsed to said sealing fluid, whereby, when said closing means isoperated in the reverse direction, the sealing fluid is first permittedto escape'and said 'acuum line is then reopened. V

9. The combination with a vacuum line, of avalve therein comprisingfixed and movable members, means for turning said movable members tofirst close said vacuum line, then to admit sealing fluid under theinfluence of external pressure and then to prevent the'escape of saidsealing fluid, and means for raising the pressure within the portion ofsaid line exposed to said sealing fluid, whereby when said movablemember is returned to its original position, said sealing fluid is firstexpelled and said line is then reopened. l

10. In a liquid sealed valve arranged for open, closed, and sealingpositions, the combination with a base member provided withahorizontally disposed seat, of avalve mem ber mounted to rotateiuponsaid seat and provided with a port therethrough eccentrically disposedat its seated end and in communication with one portion of the fluidline at its otherend, said seat being provided with two ports,eccentrically disposed with respect to the axis of rotation of saidvalve member, one of said ports being in communication with the otherportion of the fluid line, and the other of said' Copies of this patentmay be obtained for ports being in communication with a reservolr ofsealing llquld, and means whereby said valve member may be turned sothat the two fluid line ports are in registry for a r the open position,the valve port is in registry with the sealing port for thelsealingposition, and the valve port is closed by said seat in the closed valveposition.

11. In a liquid sealed valve arranged for open, closed, and sealingpositions, the combination with a base member provided withahorizontally disposed seat, of, a valve member mounted to rotate uponsaid seat and provided with a port therethrough eccentrically disposedat its seated end and in communication with one portion of the fluid ineat its other end, said seat being provided with two ports, eccentricallydisposed with respect to the aXisof rotation of said valve member, oneof said ports being in communication with the other portion of:

the fluid line, and the other of said ports being in communication witha reservoir of sealing liquid, means whereby said valve member may beturned so that the two fluid line ports are in registry for the openposition, the valve port is in registry with the sealing port for thesealing position, and the valve port is closed by said seat in theclosed valve position, means whereby a substantially uniform pressure'may be maintained on the surface of the fluid in said reservoir andmeans whereby the pressure within the portion of the fluid lineconnected to said movable member may be adjusted to values either equalto or less than that within said reservoir.

In testimony whereof, I have hereunto subscribed my name this 30th dayof June, 1915.

EDWARD E. ROSE.

Washington, D. G. V V I

